Republican presidential nominee Donald Trump speaks at the National Guard Association of the United States 138th General Conference and Exhibition in Baltimore, Maryland, U.S., September 12, 2016. REUTERS/Mike Segar

Republican presidential nominee Donald Trump speaks at the National Guard Association of the United States 138th General Conference and Exhibition in Baltimore, Maryland, U.S., September 12, 2016. REUTERS/Mike Segar

Republican presidential nominee Donald Trump speaks at the National Guard Association of the United States 138th General Conference and Exhibition in Baltimore, Maryland, U.S., September 12, 2016. REUTERS/Mike Segar